Dehydrator for sludge

Abstract

The sludge dewatering machine comprises a cover body and a rotary drum, the rotary drum is horizontally installed in the cover body, a main bearing is installed at one end of the rotary drum, a belt is installed on the side wall of the main bearing, the belt is connected with a motor, one end of the main bearing is connected with a differential mechanism, and a spiral inner container is installed in the rotary drum. One end of the spiral inner container is provided with a material conveying pipe, one end of the material conveying pipe is connected with a sludge pump, the sludge pump is connected with a material guiding pipe, the material guiding pipe is connected with a flocculation tank, the position, connected with the flocculation tank, of the material guiding pipe is provided with a filter screen, the side wall of one end of the rotary drum is provided with two sediment overflow ports, and the side wall of the other end of the rotary drum is provided with two liquid overflow ports. The motor, the differential mechanism and the sludge pump are electrically connected with a PLC (programmable logic controller), when the sludge pump pumps sludge in the flocculation tank into the spiral inner container, large-size objects in the sludge are filtered through the filter screen and are prevented from entering the spiral inner container to scratch the spiral inner container, the service life of the dehydrator is prolonged, blockage is avoided, and the dehydration efficiency of the dehydrator is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of sludge dewatering, and particularly relates to a dewatering machine for sludge. BACKGROUND

[0002] The sludge dewatering machine is an important device in the sewage treatment process, and is mainly used for dewatering the treated sludge, so as to facilitate subsequent disposal and utilization. In the traditional dewatering machine, centrifugal separation or filter pressing separation is mainly adopted. The centrifugal separation mainly utilizes the centrifugal force generated by the high-speed rotation of a centrifuge to separate different density substances. In the use process of the currently used horizontal centrifugal sludge dewatering machine, the relatively large objects in the flocculation tank will enter the feeding pipe, which will scratch and damage the inner liner during the rotation and separation of the spiral inner liner, is not conducive to discharge, causes blockage, and thus reduces the dewatering efficiency of the dewatering machine. CONTENT OF THE UTILITY MODEL

[0003] The application provides a dewatering machine for sludge, which is connected with a flocculation tank, a filter screen is arranged at the position where the flocculation tank is connected with a guide pipe, when the sludge pump pumps the sludge in the flocculation tank into the feeding pipe, the relatively large objects in the sludge are filtered through the filter screen, so that the relatively large objects are prevented from entering the spiral inner liner, the spiral inner liner is prevented from being scratched and damaged, the service life of the dewatering machine is prolonged, the relatively large objects are prevented from blocking the slag discharge port of the dewatering machine, and thus the dewatering efficiency of the dewatering machine is improved.

[0004] The application provides a dewatering machine for sludge, which comprises a cover body and a rotating drum, a rotating drum is horizontally installed in the cover body, one end of the rotating drum is provided with a main bearing, a belt is installed on the side wall of the main bearing, the belt is connected with a motor, one end of the main bearing is connected with a differential mechanism, a spiral inner liner is installed in the rotating drum, one end of the spiral inner liner is provided with a secondary bearing, the secondary bearing is sleeved in the main bearing, the secondary bearing is connected with the differential mechanism, a spiral blade is welded on the side wall of the spiral inner liner, a plurality of through holes are arranged on the side wall of the spiral inner liner, one end of the spiral inner liner is provided with a feeding pipe, one end of the feeding pipe is connected with a sludge pump, the sludge pump is connected with a guide pipe, the guide pipe is connected with a flocculation tank, and a filter screen is arranged at the position where the guide pipe is connected with the flocculation tank.

[0005] Two slag overflow ports are arranged on the side wall of one end of the rotating drum, two liquid overflow ports are arranged on the side wall of the other end of the rotating drum, a slag discharge port is arranged on the side wall of the cover body and corresponds to the slag overflow port, a liquid discharge port is arranged on the side wall of the cover body and corresponds to the liquid overflow port, and four supporting seats are arranged on the bottom of the cover body.

[0006] The motor, the differential mechanism and the sludge pump are electrically connected with a PLC controller.

[0007] Further, a convex annular groove is arranged at the main bearing.

[0008] Further, a receiving container is arranged at the bottom of the residue outlet and the liquid outlet.

[0009] Further, the diameter of the spiral inner liner gradually decreases from left to right.

[0010] Further, a display screen and a plurality of operation buttons are arranged on the PLC controller.

[0011] According to the above technical solution, the application provides a dewatering machine for sludge, which comprises a cover body and a rotating drum, wherein the cover body is internally horizontally provided with a rotating drum, one end of the rotating drum is provided with a main bearing, a side wall of the main bearing is provided with a belt, the belt is connected with a motor, one end of the main bearing is connected with a differential mechanism, a PLC controller controls the starting of the motor, the motor drives the rotating drum to rotate through the belt, the rotating drum is internally provided with a spiral inner liner, one end of the spiral inner liner is provided with a secondary bearing, the secondary bearing is sleeved in the main bearing, the secondary bearing is connected with the differential mechanism, the motor drives the rotating drum to rotate, and the rotating drum and the spiral inner liner rotate in the same direction at different speeds under the adjustment of the differential mechanism connected with the main bearing and the secondary bearing, so as to generate centrifugal force to realize the control of solid-liquid separation effect, the separated solid sediment layer and liquid are discharged from different directions through the spiral inner liner, the side wall of the spiral inner liner is welded with spiral blades, and the side wall of the spiral inner liner is provided with a plurality of through holes, when the sludge enters the spiral inner liner and is subjected to centrifugal force generated by the rotation of the spiral inner liner, the separated materials are thrown out from the through holes to the inner wall of the rotating drum, the solid sediment layer is pushed and conveyed to the right end of the rotating drum by the spiral blades through the rotation of the spiral inner liner, and the liquid is discharged from the left end of the rotating drum through the action of the centrifugal force, one end of the spiral inner liner is provided with a material conveying pipe, one end of the material conveying pipe is connected with a sludge pump, the sludge pump is connected with a material guide pipe, the material guide pipe is connected with a flocculation tank, a filter screen is arranged at the position where the material guide pipe is connected with the flocculation tank, the PLC controller controls the starting of the sludge pump, and the sludge in the flocculation tank is pumped to the spiral inner liner through the material conveying pipe, the relatively large objects in the sludge in the flocculation tank are filtered by the filter screen arranged at the material guide pipe, so as to avoid the relatively large objects from entering the spiral inner liner, prevent the spiral inner liner from being scratched and damaged, improve the service life of the dewatering machine, avoid the relatively large objects from blocking the residue outlet of the dewatering machine, and further improve the dewatering efficiency of the dewatering machine.

[0012] Two sediment overflow ports are arranged on the side wall of one end of the rotating drum, two liquid overflow ports are arranged on the side wall of the other end of the rotating drum, a slag discharge port is arranged on the cover body at the position corresponding to the sediment overflow port, and a liquid discharge port is arranged on the cover body at the position corresponding to the liquid overflow port, when the sludge enters the spiral inner container through the feeding pipe, the centrifugal force generated by the rotation of the spiral inner container separates the solid and liquid in the sludge, due to the density difference between the solid and liquid, the separated solid preferentially settles on the inner wall of the rotating drum, and is conveyed to the sediment overflow port by the spiral blade and discharged through the slag discharge port, the separated liquid is conveyed to the liquid overflow port by the action of the centrifugal force and discharged from the liquid discharge port of the cover body, the separation mode makes the discharge of the liquid and the solid more thorough, avoids the problems of blockage and residue, improves the separation efficiency and separation effect, four supporting seats are arranged at the bottom of the cover body, the four supporting seats support the dewatering machine to have a certain height, facilitate sludge dewatering, the motor, the differential and the sludge pump are electrically connected with a PLC controller, the PLC controller controls the on-off state of the motor and the sludge pump and adjusts the value of the differential, so as to realize the automatic work of the sludge dewatering machine, save labor and realize intelligent operation.

[0013] In summary, the application has the following beneficial effects:

[0014] 1、The dewatering machine is connected with a flocculation tank, a filter screen is arranged at the position where the flocculation tank is connected with the guide pipe, when the sludge pump pumps the sludge in the flocculation tank to the spiral inner container, the objects with large volume in the sludge are filtered through the filter screen, so that the objects with large volume are prevented from entering the spiral inner container and being scraped and damaged, thereby improving the service life of the dewatering machine and avoiding the objects with large volume from blocking the slag discharge port of the dewatering machine, thereby improving the dewatering efficiency of the dewatering machine.

[0015] 2、The dewatering machine is provided with a differential, the differential is used to adjust the rotating speed of the spiral inner container, so that the rotating drum and the spiral inner container rotate at the same speed with a differential, thereby generating a centrifugal force to realize the control of the solid-liquid separation effect and make the separated sediment layer and liquid discharged from different directions. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the application, the following will briefly introduce the drawings needed to be used in the implementation examples. Obviously, for those skilled in the art, other drawings can also be obtained from these drawings without any creative labor.

[0017] Fig. 1 It is a structural schematic diagram of the application.

[0018] Fig. 2 It is a structural top view schematic diagram of the application.

[0019] Fig. 3 It is a structural schematic diagram of the PLC controller of the application.

[0020] ILLUSTRATION:

[0021] Wherein, 1 - cover, 2 - drum, 3 - spiral liner, 4 - spiral blade, 5 - main bearing, 6 - motor, 7 - belt, 8 - sub bearing, 9 - differential, 10 - material conveying pipe, 11 - liquid overflow, 12 - liquid discharge, 13 - sediment overflow, 14 - sediment discharge, 15 - sludge pump, 16 - flocculation tank, 17 - filter screen, 18 - PLC controller. DETAILED DESCRIPTION

[0022] In order to make the person skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings.

[0023] It can be known from the above technical solutions that Figs. 1-3 .

[0024] Embodiment 1:

[0025] A dewatering machine for sludge, comprising: a cover 1 and a drum 2, a drum 2 is horizontally installed inside the cover 1, one end of the drum 2 is provided with a main bearing 5, the outer wall of the main bearing 5 is sleeved with a belt 7, the belt 7 is connected with a motor 6, one end of the main bearing 5 is connected with a differential 9, a PLC controller 18 controls the motor 6 to start, the motor 6 drives the drum 2 to rotate through the belt 7, a spiral liner 3 is installed in the drum 2, one end of the spiral liner 3 is provided with a sub bearing 8, the sub bearing 8 is sleeved inside the main bearing 5, the sub bearing 8 is connected with the differential 9, the motor 6 drives the drum 2 to rotate, under the adjustment of the differential 9 connected with the main bearing 5 and the sub bearing 8, the drum 2 and the spiral liner 3 rotate at the same direction with differential speed, so as to generate centrifugal force to realize the control of solid-liquid separation effect, the centrifugal force generated by the spiral liner 3 makes the separated solid sediment layer and liquid discharge from different directions, the spiral liner 3 is welded with a spiral blade 4 on the side wall, there are a plurality of through holes on the side wall of the spiral liner 3, when the sludge enters the spiral liner 3, the centrifugal force generated by the rotation of the spiral liner 3 realizes that the separated materials are thrown out from the through holes to the inner wall of the drum 2, through the rotation of the spiral liner 3, the solid sediment layer is pushed by the spiral blade 4 to be transported to the right end of the drum 2 and discharged, the liquid is discharged from the left end of the drum 2 under the action of the centrifugal force, one end of the spiral liner 3 is provided with a material conveying pipe 10, one end of the material conveying pipe 10 is connected with a sludge pump 15, the sludge pump 15 is connected with a material guide pipe, the material guide pipe is connected with a flocculation tank 16, a filter screen 17 is arranged at the position where the material guide pipe is connected with the flocculation tank 16, a PLC controller 18 controls the sludge pump 15 to start, and the sludge in the flocculation tank 16 is pumped to the spiral liner 3 through the material conveying pipe 10, the relatively large objects in the sludge in the flocculation tank 16 are filtered by the filter screen 17 arranged at the material guide pipe, so as to avoid the relatively large objects entering the spiral liner 3, prevent the spiral liner 3 from being scratched and damaged, improve the service life of the dewatering machine, and avoid the relatively large objects blocking the sediment discharge 14 of the dewatering machine, thereby improving the dewatering efficiency of the dewatering machine.

[0026] The two end side walls of the rotary drum 2 are provided with two sediment overflow ports 13, and the other end side wall of the rotary drum 2 is provided with two liquid overflow ports 11; the cover body 1 is provided with a sediment discharge port 14 corresponding to the position of the sediment overflow port 13 and is provided with a liquid discharge port 12 corresponding to the position of the liquid overflow port 11; when the sludge enters the spiral inner barrel 3 through the feeding pipe 10, the centrifugal force generated by the rotation of the spiral inner barrel 3 separates the solid and liquid in the sludge; due to the density difference between the solid and the liquid, the separated solid preferentially settles on the inner wall of the rotary drum 2 and is conveyed to the sediment overflow port 13 by the spiral inner barrel 4 and is discharged through the sediment discharge port 14 of the cover body 1; the separated liquid is conveyed to the liquid overflow port 11 by the action of the centrifugal force and is discharged from the liquid discharge port 12 of the cover body 1; the separation mode makes the discharge of the liquid and the solid more thorough, avoids the problems of blockage and residue, improves the separation efficiency and the separation effect, and the cover body 1 is provided with four supporting seats at the bottom, the four supporting seats support the dewatering machine so that the dewatering machine has a certain height, and the sludge dewatering is facilitated;

[0027] The motor 6, the differential 9 and the sludge pump 15 are electrically connected with a PLC controller 18; the PLC controller 18 controls the on-off state of the motor 6 and the sludge pump 15 and adjusts the value of the differential 9, so that the sludge dewatering machine realizes automatic work, saves manpower and realizes intelligent operation.

[0028] As a preferred embodiment, a convex annular groove is arranged at the main bearing 5, which facilitates clamping the belt 7 and prevents the belt 7 from slipping.

[0029] As a preferred embodiment, a receiving container is arranged at the bottom of each of the sediment discharge port 14 and the liquid discharge port 12, which facilitates receiving and discharging the solid sediment and the liquid.

[0030] As a preferred embodiment, the caliber of the spiral inner barrel 3 gradually decreases from left to right, which limits the flow of the solid sediment layer, so that the moving speed of the solid sediment layer is adapted to the rotating speed of the rotary drum, the solid sediment layer is conveniently and smoothly discharged, and better sludge treatment effect is realized.

[0031] As a preferred embodiment, a display screen and a plurality of operation buttons are arranged on the PLC controller 18; the display screen displays the rotating speed of the motor 6 and the adjustment value of the differential 9; and the operation buttons control the working state of the motor 6 and the sludge pump 15 and set the value of the differential 9.

[0032] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "left end", "right end", "bottom", "upper" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0033] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope of the application being indicated by the following claims.

[0034] It should be understood that the application is not limited to the precise construction hereinafter described and as shown in the attached drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The embodiments described above are meant to be exemplary only, with the true scope of the application being indicated by the following claims.

Claims

1. A dewatering machine for sludge, characterized by, Include: Cover (1) and drum (2), the cover (1) inside horizontal installation has a drum (2), one end of the drum (2) is installed with a main bearing (5), the side wall of the main bearing (5) is sleeved with a belt (7), the belt (7) is connected with a motor (6), one end of the main bearing (5) is connected with a differential (9), the drum (2) is installed with a spiral inner container (3), one end of the spiral inner container (3) is installed with a vice bearing (8), the vice bearing (8) is sleeved in the main bearing (5), the vice bearing (8) is connected with the differential (9), the outer wall of the spiral inner container (3) is welded with spiral blade (4), there are a plurality of through holes on the side wall of the spiral inner container (3), one end of the spiral inner container (3) is installed with a feeding pipe (10), one end of the feeding pipe (10) is connected with a sludge pump (15), the sludge pump (15) is connected with a guide pipe, the guide pipe is connected with a flocculation tank (16), the position of the guide pipe connected with the flocculation tank (16) is provided with a filter screen (17); The side wall of one end of the drum (2) is provided with two sediment overflow ports (13), the side wall of the other end of the drum (2) is provided with two liquid overflow ports (11), the side wall of the cover (1) is provided with a slag discharge port (14) corresponding to the position of the sediment overflow port (13), the side wall of the cover (1) is provided with a liquid discharge port (12) corresponding to the position of the liquid overflow port (11), the bottom of the cover (1) is provided with four support seats; The motor (6), the differential (9), the sludge pump (15) are electrically connected with a PLC controller (18).

2. A dewaterer for sludge according to claim 1, characterised in that, The outer wall of the main bearing (5) is provided with a convex annular groove.

3. A dewaterer for sludge according to claim 1, characterised in that, The bottom of the slag discharge port (14) and the liquid discharge port (12) respectively places a receiving container.

4. The dewatering machine for sludge according to claim 1, characterized in that, The caliber of the spiral inner container (3) gradually decreases from left to right.

5. A dewaterer for sludge as claimed in claim 1, wherein The PLC controller (18) is provided with a display screen and a plurality of operation buttons.

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